Nickel determination in saline matrices by ICP-AES after sorption on Amberlite XAD-2 loaded with PAN

Abstract

In the present paper, a solid phase extraction system for separation and preconcentration of nickel (ng g(-1)) in saline matrices is proposed. It is based on the adsorption of nickel(II) ions onto an Amberlite XAD-2 resin loaded with 1-(2-pyridylazo)-2-naphthol (PAN) reagent. Parameters such as the pH effect on the nickel extraction, the effect of flow rate and sample volume on the extraction, the sorption capacity of the loaded resin, the nickel desorption from the resin and the analytical characteristics of the procedure were studied. The results demonstrate that nickel(II) ions, in the concentration range 0.10-275 microg l(-1), and pH 6.0-11.5, contained in a sample volume of 25-250 ml, can be extracted by using 1 g Amberlite XAD-2 resin loaded with PAN reagent. The adsorbed nickel was eluted from the resin by using 5 ml 1 M hydrochloric acid solution. The extractor system has a sorption capacity of 1.87 mumol nickel per g of Amberlite XAD-2 resin loaded with PAN. The precision of the method, evaluated as the R.S.D. obtained after analyzing a series of seven replicates, was 3.9% for nickel in a concentration of 0.20 microg ml(-1). The proposed procedure was used for nickel determination in alkaline salts of analytical grade and table salt, using an inductively coupled plasma atomic emission spectroscopy technique (ICP-AES). The standard addition technique was used and the recoveries obtained revealed that the proposed procedure shows good accuracy.

Preconcentration of trace elements by using 1-(2-Pyridylazo)-2-naphthol functionalized Amberlite XAD-1180 resin and their determination by FAAS

“…[8][9][10] A number of supports and chelating ligands have been widely used in the design of chelating resins for the preconcentration and separation of trace metal ions from various matrices. The most prominent among the supports used are Amberlite XAD resins, 11,12 silica gel, 13 activated carbon, 14 activated alumina, 15 sepiolite, 16 and related polymeric supports. 17,18 Some important and recently reported chelating matrices described using such supports are: silica gel modified with purpurogallin, 19 1-(2-pyridylazo)-2-naphthol, 20 3-aminopropyltriethoxysilane, 21 1,8-dihydroxyanthraquinone, 22 2-aminothiazole, 23 N-propylsalicylaldimine, 24 surfactant coated alumina modified with 1-(2-pyridylazo)-2-naphthol, 15 Amberlite XAD-2 modified with chromotropic acid, 25 alizarin red-S, 26 Nitroso R salt, 27 Amberlite XAD-4 modified with o-aminobenzoic acid, 28 N-hydroxyethylenediamine, 29 and Amberlite XAD-16 modified with 1-(2-thiazolylazo)-2-naphthol.…”

Removal of Bitterness by Using of Amberlite in Orange Juices

“…The impregnation of polymer matrices with common chelating ligands is an easy way to design chelating collectors. Amberlite XAD-2 [24][25][26][27][28], Amberlite XAD-4, Amberlite XAD-7, Amberlite XAD-16 [28] and Amberlite IRC-718 [29] have been used as a support for such preparations. During this process, it was aimed to contribute to the literature by investigating the effects of changing the qualitative properties such as taste, aroma, pH, titration acidity, amount of limonin in orange juice to orange juice.…”

Monitoring of nickel(II) in biological samples using 4-(2-hydroxy-phenylethamino)benzene-1,3-diol by extractive differential pulse polarography

“…Various analytical methods have been proposed for the monitoring of nickel(II) in environmental matrices such as spectrophotometry [3,4], X-ray fluorescence spectrophotometry [5], atomic absorption spectrometry [6], inductively coupled plasma atomic emission spectrometry [7,8], inductively coupled plasma mass spectrometry [9], voltammetry [10,11] and chromatography [12]. Most of these techniques, however, are either very expensive, suffer from many interferences or require highly skilled technicians.…”